- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.391-0.431 inches
- Fastener Length
- 0.490-0.510 inches
- Head Style
- Hexagon
- Head Height
- 0.146-0.166 inches
- Width Between Flats
- 0.430-0.439 inches
- Nominal Thread Diameter
- 0.250 inches
- Grip Length
- 0.079-0.099 inches
- Features Provided
- Finished head
- Thread Quantity per Inch
- 28
- Minimum Tensile Strength
- 125000 PSI
- Hardness Rating
- 26.0-32.0 Rockwell C
- Surface Finish
- 32.0 microinches (bearing surface, grip, threads)
- Material
- Steel comp 8740 overall
- Material Spec
- AMS 6322
- Surface Treatment
- Cadmium overall
- Surface Treatment Spec
- AMS 2400
- Thread Series Designator
- UNJF
Catalogue data is compiled from public DLA/FLIS sources and is provided for
identification. Availability, condition and certification are confirmed on
quotation. OmniSynk Distribution Services is a stocking distributor.